Developing box and processing box

Abstract

The utility model discloses a developing box and a processing box for electrophotographic imaging equipment. The developing box comprises a box body and a developing roller, the box body is internally provided with a developing agent accommodating chamber for accommodating a developing agent, one longitudinal end part of the box body is provided with a separating component, the separating component is provided with an abutting part which abuts against a drum frame, a force receiving part is arranged above the abutting part, and a connecting part is arranged below the abutting part; when the force receiving portion receives the force applied by the electrophotographic image forming apparatus, the separating member rotates around the abutting portion to separate the developing roller from the photosensitive drum. The developing roller is simple in structure, and the developing roller can be conveniently separated from or contacted with the photosensitive drum.

Description

Technical Field

[0001] The utility model belongs to the field of electronic photographic imaging, and in particular relates to a developing box and a processing box used for electronic photographic imaging equipment.

[0002] This patent application claims priority to patent application number 202321642863.X, titled "Developing Box and Processing Box", filed on June 26, 2023, and Chinese patent application number 202321685970.0, titled "Developing Box and Processing Box", filed on June 29, 2023. Background Art

[0003] An electronic photographic imaging device is a device that uses the principle of electronic photography to form an image on a recording medium through processes such as charging, exposure, development, transfer, de-electrification, cleaning, and fixing. In the development process, there are two development methods, one is jumping development and the other is contact development. In the jumping development method, the developing component and the photosensitive component are not in contact, and the developer jumps from the surface of the developing component to the surface of the photosensitive component. In the contact development method, the developing component and the photosensitive component maintain contact during the rotation process, and the developer on the surface of the developing component is transferred to the surface of the photosensitive component when it contacts the photosensitive component. In the process cartridges used in electronic photographic imaging devices, the contact development method is more often used, that is, during the development process, the photosensitive drum in the process cartridge contacts the developing roller, and the developer on the surface of the developing roller is transferred to the photosensitive drum at the contact position.

[0004] There is a kind of processing box, which is split, that is, the developing box of the processing box is detachably connected to the drum frame. After the developer in the developing box is used up, a new developing box is replaced, and the drum frame does not need to be removed in the electronic photographic imaging device. In addition, the developing box is provided with a locking member, and the drum frame is provided with an unlocking member. The locking member cooperates with the unlocking member so that the developing box cannot be removed in the direction opposite to the installation direction. Because the photosensitive drum or the developing roller is easily damaged when the developing roller and the photosensitive drum are not working for a long time and remain in contact, this processing box will be provided with a separation member to keep the developing roller and the photosensitive drum separated when not working and only contact when working. In addition, the developing roller needs to maintain a certain voltage when working, and a receiving electrode needs to be provided on the developing box to supply power to the developing roller. U.S. patent application US20230079258A1 discloses a developing box, wherein a non-driving end of the developing box is provided with an electrode for providing power to a developing roller, a separation member for separating the developing roller from a photosensitive drum, and a support member for supporting the separation member, thereby making the end of the developing box have more parts and a compact space, and making the assembly requirements and structural accuracy requirements between the parts high, thereby increasing the manufacturing cost of the entire developing box. Summary of the invention

[0005] In view of the problems existing in the prior art, the main purpose of the utility model is to provide a developing box which can easily separate the developing roller from the photosensitive drum and has low structural precision requirements;

[0006] Another object of the utility model is to provide a processing box which can conveniently realize the separation of the developing roller and the photosensitive drum and has low structural precision requirements.

[0007] In order to achieve the above-mentioned main purpose, the utility model provides a developing box, which is used for an electronic photographic imaging device and is installed on a drum frame with a photosensitive drum. The developing box includes a box body and a developing roller, and a developer accommodating chamber for accommodating a developer is arranged in the box body. A separation member and an electrode are arranged at one longitudinal end of the box body. The separation member includes an abutment portion and a force receiving portion, wherein the abutment portion abuts against the drum frame, and the force receiving portion is used to receive the force applied by the electronic photographic imaging device. The electrode is connected to the central axis of the developing roller and abuts against the terminal of the drum frame to receive electricity from the terminal to charge the developing roller. The separation member also includes a connecting portion that is relatively rotatably connected to the box body or the developing roller. When the force receiving portion receives the force applied by the electronic photographic imaging device, the separation member rotates around the abutment portion to separate the developing roller from the photosensitive drum.

[0008] It can be seen from the above scheme that the separation member arranged on the box body receives the force applied by the electronic photographic imaging device and rotates, and the connecting part drives the box body to move, so that when the developing box is not working, the developing roller and the photosensitive drum are in a separated position, and the connecting part is rotatably connected relative to the box body or the developing roller, and is slidably connected relative to the free end of the separation member. The rotating connection makes the connection between the separation member and the box body more secure, and the developing box has a simple structure and low cost.

[0009] According to a specific implementation of the utility model, the box body is provided with a first matching portion, and the separation member is provided with a second matching portion. When the separation member rotates relative to the box body, the second matching portion moves relative to the first matching portion.

[0010] It can be seen from the above scheme that in addition to the connecting part, the box body and the separation member are also connected through the first matching part and the second matching part, so that the connection between the separation member and the box body is further stabilized, and the rotation of the separation member reliably drives the box body to move to separate the developing roller from the photosensitive drum.

[0011] According to a specific embodiment of the utility model, the first matching part is one of the slot or the protrusion, the second matching part is the other of the protrusion or the slot, the protrusion is accommodated in the slot, and the protrusion is provided with a buckle. The separation member is installed and fixed on the box body through the matching of the slot and the buckle.

[0012] According to a specific embodiment of the utility model, the connecting portion is connected to one end of the electrode, and the other end of the electrode is connected to the developing roller, and when the separating member rotates, the electrode is driven to move and then the developing roller is driven to move. The separation member is connected to the electrode to achieve connection with the central axis of the developing roller, and then the developing roller is driven to move when the separating member rotates.

[0013] According to a specific embodiment of the utility model, the connecting part has a protrusion connected to the connecting hole of the electrode. The protrusion is installed in the hole so that the connecting part and the electrode are rotatably connected.

[0014] According to a specific embodiment of the utility model, the connecting portion has a first through hole directly connected to the central axis of the developing roller, the electrode has a second through hole connected to the central axis of the developing roller, and the first through hole and the second through hole at least partially overlap. The separation member and the electrode are both rotatably connected to the developing roller at the non-driving end of the developing roller, and the rotation of the separation member directly drives the developing roller to move.

[0015] According to a specific embodiment of the utility model, the electrode is integrally formed with the separation member, the electrode is a part of the separation member, and the portion where the electrode is connected to the central axis of the developing roller forms the connecting portion. The integral forming simplifies the structure of the developing box.

[0016] According to a specific embodiment of the utility model, the separation member is made of a conductive material to be used as an electrode to charge the developing roller, and has an electrical connection portion abutting against the terminal. The separation member plays a role in charging the developing roller, and there is no need to set up an electrode separately, and the structure of the developing box is further simplified.

[0017] According to a specific embodiment of the utility model, the developing box is provided with a locking piece, and the drum frame is provided with an unlocking piece. When the developing box is installed in the drum frame, the locking piece cooperates with the unlocking piece to prevent the developing box from being removed in a direction opposite to the installation direction.

[0018] To achieve another purpose, the utility model provides a processing box for an electronic photographic imaging device, wherein the processing box includes a developing box and a drum frame, wherein the developing box includes a box body and a developing roller, and the drum frame includes a photosensitive drum, and the developing box is the above-mentioned developing box.

[0019] In order to more clearly illustrate the above-mentioned objectives, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1-1It is a schematic structural diagram of the processing box in Example 1-1 of the utility model;

[0021] Figure 1-2 It is a schematic structural diagram of the drum frame in Example 1-1 of the utility model;

[0022] Figure 1-3 It is a schematic structural diagram of the developing box in Embodiment 1-1 of the present utility model;

[0023] Figure 1-4 It is a schematic diagram of the structure decomposition of the developing box in Example 1-1 of the utility model;

[0024] Figure 1-5 It is a structural schematic diagram of the separation component in Example 1-1 of the utility model;

[0025] Figure 1-6 It is a schematic diagram of the end surface structure of the processing box in Example 1-1 of the utility model;

[0026] Figure 1-7 It is a schematic diagram of the structure of the processing box in Embodiment 1-2 of the utility model;

[0027] Figure 1-8 It is a schematic diagram of the structure of the developing box in Embodiment 1-2 of the present utility model;

[0028] Figure 1-9 It is a schematic diagram of the structure of the separation component in Embodiment 1-2 of the present utility model;

[0029] Figure 1-10 It is a schematic diagram of the structure of the separation component in Embodiment 1-2 of the present utility model;

[0030] Figure 1-11 It is a schematic diagram of the structure of the electrode in Embodiment 1-2 of the present utility model;

[0031] Figure 1-12 It is a schematic diagram of the structure of the processing box in Embodiment 1-3 of the utility model;

[0032] Figure 1-13 It is a schematic diagram of the structure of the developing box in Embodiment 1-3 of the utility model;

[0033] Figure 1-14 It is a schematic diagram of the structure of the separation component in Embodiments 1-3 of the present utility model;

[0034] Figure 1-15 It is a schematic diagram of the structure of the separation component in Embodiments 1-3 of the present utility model;

[0035] Figure 2-1 It is a schematic diagram of the structure of the processing box in Example 2-1 of the utility model;

[0036] Figure 2-2It is a schematic diagram of the structure of the drum frame in Example 2-1 of the utility model;

[0037] Figure 2-3 It is a schematic structural diagram of the developing box in Embodiment 2-1 of the present utility model;

[0038] Figure 2-4 It is a partial structural exploded schematic diagram of the developing box in Example 2-1 of the utility model;

[0039] Figure 2-5 It is a schematic diagram of the side structure of the developing box in Example 2-1 of the utility model;

[0040] Figure 2-6 It is a schematic structural diagram of the processing box in Example 2-2 of the utility model;

[0041] Figure 2-7 It is a schematic structural diagram of the developing box in Embodiment 2-2 of the present utility model;

[0042] Figure 2-8 It is a partial structural exploded schematic diagram of the developing box in Example 2-2 of the utility model;

[0043] Figure 2-9 It is a schematic diagram of the side structure of the developing box in Example 2-2 of the utility model;

[0044] Figure 2-10 It is a schematic diagram of the structure of the processing box in Embodiment 2-3 of the utility model;

[0045] Figure 2-11 It is a schematic structural diagram of the developing box in Embodiment 2-3 of the present utility model;

[0046] Figure 2-12 It is a partial structural exploded schematic diagram of the developing box in Embodiment 2-3 of the utility model;

[0047] Figure 2-13 It is a schematic diagram of the side structure of the developing box in Embodiment 2-3 of the utility model;

[0048] Figure 2-14 It is a schematic diagram of the structure of the processing box in Embodiment 2-4 of the utility model;

[0049] Figure 2-15 It is a schematic diagram of the structure of the developing box in Embodiment 2-4 of the utility model;

[0050] Figure 2-16 It is a partial structural exploded schematic diagram of the developing box in Embodiment 2-4 of the present utility model;

[0051] Figure 2-17 It is a schematic diagram of the side structure of the developing box in Embodiment 2-4 of the utility model;

[0052] Figure 2-18 It is a schematic diagram of the structure of the processing box in Embodiment 2-5 of the utility model;

[0053] Figure 2-19 It is a schematic diagram of the structure of the developing box in Embodiment 2-5 of the utility model;

[0054] Figure 2-20 It is a partial structural exploded schematic diagram of the developing box in Embodiment 2-5 of the utility model;

[0055] Figure 2-21 It is a schematic diagram of the side structure of the developing box in Embodiment 2-5 of the utility model; DETAILED DESCRIPTION

[0056] The first set of embodiments

[0057] The first group of embodiments is described in detail below.

[0058] Example 1-1

[0059] like Figure 1-1 As shown, the processing box 100 includes a developer box 11 and a drum frame 12 which are installed together in a longitudinally consistent manner. The developer box 11 includes a developer roller 13 and a box body, and the drum frame 12 includes a photosensitive drum 14 and a shell, wherein the developer roller 13 and the photosensitive drum 14 are axially parallel and face each other. After the developer contained in the developer box 11 is used up, the developer box 11 can be removed from the drum frame 12 and replaced with a new one. The drum frame 12 does not need to be removed from the electronic photographic imaging device. When the photosensitive drum 14 or other components installed in the drum frame 12 reach the end of their service life, the drum frame 12 can also be removed from the electronic photographic imaging device to replace a new drum frame 12. The structures of the various components of the processing box 100 are described below. The structure of the drum frame 12 is referenced. Figure 1-2 Give a description.

[0060] like Figure 1-2 As shown, the drum frame 12 includes a photosensitive drum 14 and a housing 121, wherein the photosensitive drum 14 is rotatably mounted on the housing 121, and the two longitudinal ends of the housing 121 are provided with a receiving groove 1211 for guiding the developer cartridge 11 to be installed and accommodating the central axis of the developer roller. The movable terminal 151 is arranged at one end of the housing 121, and a terminal accommodating chamber 1213 is arranged on the housing 121. An elastic mechanism for applying elastic force to the movable terminal 151 is arranged in the terminal accommodating chamber 1213, and the movable terminal 151 is partially accommodated in the terminal accommodating chamber 1213. At this end, the housing 121 is also provided with an abutting portion 123 for abutting against a separating member of the developer cartridge 11, and an unlocking member 124 for cooperating with a locking member of the developer cartridge 11, wherein the unlocking member 124 is rotatably fixed on the housing 121.

[0061] like Figure 1-3 to Figure 1-5As shown, the developing box 11 includes a developing roller 13 and a box body 111. Along the installation direction when installed to the drum frame 12, the developing roller 13 is arranged at the front side, and the central axis 131 of the developing roller protrudes to the end beyond the box body 111. The box body 111 has a developer accommodating portion for accommodating the developer. The two longitudinal ends of the box body 111 are respectively a driving end and a non-driving end. The transmission mechanism is arranged at the driving end, and the end cover 112 is arranged outside the transmission mechanism. The non-driving end ND of the box body 111 is provided with a separation member 132a and an electrode 133.

[0062] Further, the box body 111 may be provided with a slot 114 and a hole 115, which respectively cooperate with the buckle 1324 and the fixing column 1325 (convex column) of the separation member to install the separation member 132a and rotatably fix it on the box body 111. It can be understood that the slot 114 provided on the box body 111 in this embodiment is a specific form of the first matching portion, and the buckle 1323 of the separation member 132a is a specific form of the second matching portion. In other embodiments, the buckle can be provided on the box body and the slot can be provided on the separation member, or the buckle part is only provided with a protrusion extending into the slot and does not make the box body and the separation member buckle, as long as the separation member rotates relative to the box body, the second matching portion can move relative to the first matching portion. In addition, in other embodiments, the hole 115 may not be provided on the box body 111, and the separation member 132a does not need to be provided with a protrusion, or only the hole and the protrusion are provided without providing the matching of the slot and the buckle or the protrusion.

[0063] Further, the separation member 132a includes a force receiving portion 1321, an abutting portion 1322 and a connecting portion 1323, wherein the force receiving portion 1321 and the connecting portion 1323 are respectively arranged on both sides of the abutting portion 1322, wherein the connecting portion 1323 of the separation member 132a has a protrusion that can be connected to the connecting hole 1332 of the electrode 133, so that the separation member 132a is rotatably connected to the electrode 133, and the separation member 132a is partially accommodated in the opening 1333 of the electrode 133, and the electrode 133 is connected to the central shaft 131 of the developing roller through the sleeve portion 1331. The electrode 133 abuts against the movable terminal 151 on the drum frame 12 and receives power from the movable terminal 151.

[0064] Furthermore, the force receiving portion 1321 of the separation member 132a is used to receive a force from the electronic photographic imaging device to separate the developing roller from the photosensitive drum 14, and the abutting portion 1322 is used to abut against the abutting portion 123 of the drum frame, wherein the force receiving portion 1321 can be arranged above the abutting portion 1322, and the connecting portion 1323 can be arranged below the abutting portion 1322. When the force receiving portion 1321 receives the force applied by the electronic photographic imaging device, the separation member 132a rotates around the position where the abutting portion 1322 thereof contacts the abutting portion 123 of the drum frame, and the force receiving portion 1321 moves approximately in the direction of the force, and the connecting portion 1323 drives the box body 111 and the developing roller to move in a direction approximately opposite to the force, thereby separating the developing roller from the photosensitive drum 14.

[0065] When the developing box 11 is installed to the drum frame 12, it is installed to the drum frame 12 in a manner that the developing roller 13 is located on the front side along the installation direction, and the developing roller center axis 131 protruding out of the box body 111 is guided by the accommodating groove 1121 to move forward, and is finally accommodated in the accommodating groove 1211. The locking member 113 slides along the upper surface of the unlocking member 124 and passes over the surface to form a mutual lock, and the electrode 133 abuts against the movable terminal 151. The abutting portion 1322 of the separation member 132a abuts against the abutting portion 123 of the shell 121, and the installation of the developing box 11 is completed. The electrode 133 receives power from the movable terminal 151 and transmits it to the developing roller center axis 131, and the processing box 100 can start working. When the processing box 100 installed in the electronic photographic imaging device is not working, such as Figure 1-6 As shown, the electrophotographic imaging device applies force to the force receiving portion 1321 of the separation member 132a, and the separation member 132a rotates around the position where its abutting portion 1322 contacts the abutting portion 123 of the drum frame 12, driving the electrode 133 and the developing roller 13 to move in a direction away from the photosensitive drum 14, and the movable terminal 151 is pushed to overcome the elastic force of the elastic mechanism and move into the terminal accommodating chamber 1213. When the separation member 132a is not pressed, the developing cartridge 11 returns to the initial position under the action of gravity, the developing roller 13 contacts the photosensitive drum 14, and the elastic force of the elastic mechanism pushes the movable terminal 151 to return in a manner of maintaining contact with the electrode 133, and the processing cartridge 100 can start working.

[0066] In this embodiment, the separation member 132a has a simple structure and is directly mounted and rotatably fixed on the box body 111. The developing box 11 has a simple structure and is easy to install.

[0067] Example 1-2

[0068] The structure of the process cartridge in this embodiment may be similar or identical to that in Embodiment 1-1 except that the structure of the separation member is different. Figure 1-7As shown, the processing box 200 includes a developing box 21 and a drum frame 22 which are installed together in a longitudinally consistent manner, and the developing roller 23 and the photosensitive drum 24 are parallel to each other and face each other. After the developer contained in the developing box is used up, the developing box 21 can be removed from the drum frame 22 and replaced with a new developing box 21. The drum frame 22 does not need to be removed from the electronic photographic imaging device. When the service life of the photosensitive drum or other components installed in the drum frame 22 is reached, the drum frame 22 can also be removed from the electronic photographic imaging device to replace a new drum frame 22. The structure of the drum frame 22 is basically the same as the structure of the drum frame 12 in the processing box embodiment 1-1, and will not be repeated here.

[0069] like Figure 1-8 to Figure 1-11 As shown, the developing box 21 includes a developing roller and a box body 211. Along the installation direction of the drum frame 22, the developing roller is arranged at the front side, and the central axis 231 of the developing roller protrudes beyond the end of the box body 211. The box body 211 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is arranged at its driving end, and the end cover 212 is arranged outside the transmission mechanism. The non-driving end ND of the box body 211 is provided with a separation member 232a and an electrode 233. The box body 211 may be provided with a mounting structure to mount and rotatably fix the separation member 232a on the box body 211, and the connecting portion of the separation member 232a is connected to the central axis 231 of the developing roller, and the separation member 232a is partially accommodated in the opening of the electrode 233. One end of the electrode 233 is connected to the central axis 231 of the developing roller through the second through hole 2331 of the sleeve portion, and the other end abuts against the movable terminal on the drum frame 22 and receives power from the movable terminal.

[0070] Furthermore, the box body 211 is provided with a slot and a hole that respectively cooperate with the buckle 2324 and the fixing column 2325 of the separation member to install and fix the separation member 232a on the box body 211. It can be understood that in other embodiments, the installation and cooperation between the separation member and the box body can be other ways.

[0071] Further, the separation member 232a includes a force receiving portion 2321, an abutting portion 2322 and a connecting portion 2323, wherein the force receiving portion 2321 is used to receive a force from the electronic photographic imaging device to separate the developing roller 23 from the photosensitive drum 24, the abutting portion 2322 abuts against the abutting portion of the drum frame 22, and the connecting portion 2323 has a first through hole 2327 connected to the central shaft 231 of the developing roller, so that the connecting portion 2323 is rotatably connected to the developing roller 23, that is, the non-driving end of the central shaft 231 of the developing roller is rotatably connected to the connecting portion 2323 and the electrode 233, and the second through hole 2331 covers the developing roller 23. The first through hole 2327, that is, the first through hole 2327 is located in the second through hole 2331, wherein the force receiving portion 2321 is arranged above the abutting portion 2322, and the connecting portion 2323 is arranged below the abutting portion 2322. When the force receiving portion 2321 receives the force applied by the electronic photographic imaging device, the separation member 232a rotates around the position where its abutting portion 2322 contacts the abutting portion of the drum frame, and the force receiving portion 2321 moves roughly in the direction of the force, and the connecting portion 2323 drives the developing roller center axis 231 and the box body 211 to move in a direction roughly opposite to the force, so that the developing roller 23 is separated from the photosensitive drum 24.

[0072] When the developing cartridge 21 is installed to the drum frame 22, the developing roller 23 is installed to the drum frame 22 in the installation direction in such a manner that the developing roller 23 is located at the front side, and the central axis 231 of the developing roller protruding out of the box body 211 is guided by the receiving groove 221 of the drum frame 22 to move forward and is finally received in the receiving groove 221. The locking member 213 slides along the upper surface of the unlocking member 224 of the drum frame 22 and passes over the surface to form a mutual lock, and the electrode 233 abuts against the movable terminal of the drum frame 22. The abutting portion 2322 of the separation member 232a abuts against the abutting portion 223 of the drum frame 22, the installation of the developing cartridge 21 is completed, and the process cartridge 200 can start to work, and the electrode 233 receives power from the movable terminal and transmits it to the central axis 231 of the developing roller. When the processing box 200 installed in the electronic photographic imaging device is not working, the electronic photographic imaging device applies force to the separation member 232a, and the separation member 232a rotates around the position where its abutment portion 2322 contacts the abutment portion of the drum frame, driving the electrode 233 and the central axis 231 of the developing roller to move in a direction away from the photosensitive drum, the developing roller 23 is separated from the photosensitive drum 24, and the movable terminal is pushed to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity. When the separation member 232a is not pressed, the developing box 21 returns to the initial position under the action of gravity, the developing roller 23 contacts the photosensitive drum 24, and the elastic force of the elastic mechanism pushes the movable terminal to return in a manner of maintaining contact with the electrode 233, and the processing box 200 can start working.

[0073] In this embodiment, the separation member 232a has a simple structure and is directly connected to the central axis 131 of the developing roller. The rotation of the separation member directly drives the developing roller to move. The developing box 21 has a simple structure and is easy to install.

[0074] Examples 1-3

[0075] The structure of the process cartridge in this embodiment may be similar or identical to that in Embodiments 1-1 and 1-2, except that the separation member is made of a conductive material and there is no need to provide separate electrodes.

[0076] like Figure 1-12 As shown, the processing box 300 includes a developer box 31 and a drum frame 32 which are installed together in a longitudinally consistent manner. The developer roller 33 and the photosensitive drum 34 are parallel to each other and face each other. After the developer contained in the developer box 31 is used up, the developer box 31 can be removed from the drum frame 32 and replaced with a new developer box 31. The drum frame 32 does not need to be removed from the electronic photographic imaging device. When the service life of the photosensitive drum or other components installed in the drum frame 32 is reached, the drum frame 32 can also be removed from the electronic photographic imaging device to replace a new drum frame 32. The structure of the drum frame 32 is basically the same as the structure of the drum frame 12 in 1-Example 1, and will not be repeated here.

[0077] like Figure 1-13 to Figure 1-15 As shown, the developing box 31 includes a developing roller and a box body 311. Along the installation direction to the drum frame 32, the developing roller is arranged on the front side, and the central axis 331 of the developing roller protrudes beyond the end of the box body 311. The box body 311 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is provided at the driving end thereof, and the end cover 312 is provided on the outside of the transmission mechanism. A separation member 332a is provided at the non-driving end ND of the box body 311. A mounting structure is provided on the box body 311 to enable the separation member 332a to be installed and fixed on the box body 311, and the connecting portion 3323 of the separation member 332a is connected to the central axis 331 of the developing roller, and abuts against the movable terminal on the drum frame 22, and receives power from the movable terminal.

[0078] Furthermore, the box body 311 is provided with a slot and a hole that respectively cooperate with the buckle 3324 and the fixing column 3325 of the separation member to install and rotatably fix the separation member 332a on the box body 311. It can be understood that in other embodiments, the installation and cooperation between the separation member and the box body can be other ways.

[0079] Further, the separation member 332a includes a force receiving portion 3321, an abutting portion 3322 and a connecting portion 3323, wherein the force receiving portion 3321 is used to receive a force from the electrophotographic imaging device to separate the developing roller from the photosensitive drum, the abutting portion 3322 abuts against the abutting portion 323 of the drum frame 32, and the connecting portion 3323 is connected to the developing roller central shaft 331, so that the connecting portion 3323 is rotatably connected to the developing roller 33, wherein the force receiving portion 3321 is provided on the abutting portion 3322. , the connecting portion 3323 is arranged below the abutting portion 3322. When the force receiving portion 3321 receives the force applied by the electronic photographic imaging device, the separating member 332a rotates around the position where its abutting portion 3322 contacts the abutting portion 323 of the drum frame 32, and the force receiving portion 3321 moves roughly in the direction of the force. The connecting portion 3323 drives the central shaft 331 of the developing roller and the box body 311 to move roughly in the direction opposite to the force, so that the developing roller 33 is separated from the photosensitive drum 34. The electrical connecting portion 3326 abuts against the movable terminal of the drum frame 32. The connecting portion 3322 of the separating member 332a is connected to the central shaft 331 of the developing roller, and is provided with a hook 3327 to maintain close contact with the central shaft 331 of the developing roller, so as to transmit electricity to the central shaft 331 of the developing roller.

[0080] When the developing box 31 is installed to the drum frame 32, the developing roller 33 is installed to the drum frame 32 in the installation direction in such a way that the developing roller 33 is located at the front side. The central axis 331 of the developing roller protruding out of the box body 311 is guided by the receiving groove 321 of the drum frame 32 to move forward and finally be received in the receiving groove 321. The locking member 313 slides along the upper surface of the unlocking member 324 of the drum frame 32 and passes over the surface to form a mutual lock. The electrical connection portion 3326 of the separation member 332a abuts against the movable terminal of the drum frame, and the abutting portion 3322 abuts against the abutting portion 323 of the drum frame 32. The installation of the developing box 31 is completed, the separation member 332a receives power from the movable terminal and transmits it to the central axis 331 of the developing roller, and the processing box 300 can start working. When the processing box 300 installed in the electronic photographic imaging device is not working, the electronic photographic imaging device applies force to the force receiving portion 3321 of the separation member 332a, and the separation member 332a rotates around the position where its abutment portion 3322 contacts the abutment portion 323 of the drum frame 32, driving the central axis 331 of the developing roller and then driving the developing roller 33 to move in a direction away from the photosensitive drum 34, and the movable terminal is pushed to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity. When the separation member 332a is not pressed, the developing box 31 returns to the initial position under the action of gravity, the developing roller 33 contacts the photosensitive drum 34, and the elastic force of the elastic mechanism pushes the movable terminal to return in a manner of maintaining contact with the separation member 332a, and the processing box 300 can start working.

[0081] In this embodiment, the separation member 332a has a simple structure and is made of a conductive material, and there is no need to set up an electrode to receive power. The developer box 31 has a simple structure, is easy to install, and has a low manufacturing cost. In other embodiments, the separation member and the electrode are integrally formed, wherein the electrode is part of the separation member, and the portion where the electrode is connected to the central axis of the developer roller forms a connecting portion of the separation member.

[0082] Second Group of Embodiments

[0083] The first aspect of the second group of embodiments discloses a developing box, which is used for an electronic photographic imaging device and is installed on a drum frame having a photosensitive drum. The developing box includes a box body and a developing roller. The box body is provided with a developer containing chamber for containing a developer. The non-driving end of the box body is provided with a separation assembly. The separation assembly includes a force receiving portion for receiving the force applied by the electronic photographic imaging device and an abutting portion abutting against the drum frame. When the force receiving portion receives the force applied by the electronic photographic imaging device, the abutting portion is restricted from moving due to the abutment with the drum frame, so that the separation assembly drives the developing box to move, and then the developing roller is separated from the photosensitive drum. The separation assembly realizes the change of the direction and position of the force, so that the force applied to the force receiving portion is converted into the force for separating the developing roller from the photosensitive drum. The structure is simple and the precision requirement is low, so that the manufacturing cost of the developing box is low.

[0084] Furthermore, the separation assembly includes a connecting rod mechanism, the force receiving portion is arranged at one end of the connecting rod mechanism, and the abutting portion is arranged at the other end of the connecting rod mechanism. The connecting rod mechanism is used to change the direction and position of the force, so that the force applied to the force receiving portion is converted into a force that separates the developing roller from the photosensitive drum. The structure is simple and the precision requirement is low, so that the manufacturing cost of the developing box is low.

[0085] Furthermore, the separation assembly includes a rack-and-pinion mechanism, the force receiving portion is arranged at one end of the rack-and-pinion mechanism, and the abutting portion is arranged at the other end of the rack-and-pinion mechanism. The change of the direction and position of the force is achieved by the rack-and-pinion mechanism, so that the force applied to the force receiving portion is converted into a force for separating the developing roller from the photosensitive drum, the structure is simple, and the precision requirement is low, so that the manufacturing cost of the developing box is low.

[0086] Furthermore, the gear rack mechanism includes a first component and a second component, wherein the first component includes a force receiving portion and a gear fixedly connected to the force receiving portion, and the second component includes a rack portion meshing with the gear and the abutting portion. The force receiving portion of the first component receives the force applied by the electronic photographic imaging device, so that the gear rotates, and the rotation of the gear drives the gear bar to move in a straight line direction, and the abutting portion abuts against the abutting portion of the drum frame and cannot move further, thereby pushing the developing box to move in the direction of separating the developing roller from the photosensitive drum, and the developing roller is separated from the photosensitive drum. The developing box has a simple structure and low precision requirements, so the manufacturing cost of the developing box is low.

[0087] Further, the gear rack mechanism includes a first component, a second component and a third component, wherein the first component includes the force receiving portion and a first rack portion, the second component includes a gear, the third component includes a second rack portion and the abutment portion, and the first rack portion and the second rack portion are both engaged with the gear. The gear and other structures are manufactured separately, so that the manufacturing accuracy of each component is easy to control and the manufacturing cost of the developing box is low.

[0088] Furthermore, the separation assembly includes a first member and a second member that abut against each other, the first member is provided with the force receiving portion, and the second member is provided with an abutting portion, and when the force receiving portion receives the force applied by the electronic photographic imaging device, the first member pushes the second member to move. The direction and position of the force are changed by the two members abutting against each other, so that the force applied to the force receiving portion is converted into a force that separates the developing roller from the photosensitive drum, the structure is simple, the precision requirement is low, and thus the manufacturing cost of the developing cartridge is low.

[0089] Further, the first member has a first abutting inclined surface, the second member has a second abutting inclined surface, and the first member and the second member abut against each other via the first abutting inclined surface and the second abutting inclined surface.

[0090] Further, any one of the first member and the second member has an abutting inclined surface, and the first member and the second member abut against each other while maintaining line contact.

[0091] The second aspect of the second group of embodiments discloses a processing box for an electronic photographic imaging device, wherein the processing box includes a developing box and a drum frame, wherein the developing box includes a box body and a developing roller, and the drum frame includes a photosensitive drum, wherein the developing box is the above-mentioned developing box.

[0092] The second group of embodiments is described in detail below.

[0093] Example 2-1

[0094] like Figure 2-1As shown, the processing box 100 includes a developer box 11 and a drum frame 12 which are installed together in a longitudinally consistent manner. The developer roller 13 and the photosensitive drum 14 are parallel to each other and face each other. After the developer contained in the developer box 11 is used up, the developer box 11 can be removed from the drum frame 12 and replaced with a new one. The drum frame 12 does not need to be removed from the electronic photographic imaging device. When the photosensitive drum 14 or other components installed in the drum frame 12 reach the end of their service life, the drum frame 12 can also be removed from the electronic photographic imaging device to replace a new drum frame 12. The structures of the various components of the processing box 100 are described below. The structure of the drum frame 12 is referenced. Figure 2-2 Give a description.

[0095] like Figure 2-2 As shown, the drum frame 12 includes a photosensitive drum 14 and a housing 121, wherein the photosensitive drum 14 is rotatably mounted on the housing 121, and the longitudinal ends of the housing 121 are provided with receiving grooves 1211 and 1212 for guiding the developer cartridge 12 to be installed and accommodating the central axis of the developer roller. The movable terminal 151 is arranged at one end of the housing 121, which corresponds to the non-driving end of the developer cartridge 11, and the housing 121 is provided with a terminal accommodating chamber 1213, and an elastic mechanism for applying elastic force to the movable terminal 151 is arranged in the terminal accommodating chamber 1213, and the movable terminal 151 is partially accommodated in the terminal accommodating chamber 1213. At this end, outside the terminal accommodating chamber 1213, the housing 121 is also provided with an abutting portion 1214 for abutting against the separation assembly of the developer cartridge 11, so that when the separation assembly receives the force applied by the electronic photographic imaging device, the developer roller 13 is separated from the photosensitive drum 14.

[0096] like Figure 2-3 to Figure 2-4 As shown, the developing box 11 includes a developing roller 13 and a box body 111. Along the installation direction when installed to the drum frame 12, the developing roller is arranged at the front side, and the central axis 131 of the developing roller protrudes to the end beyond the box body 111. The box body 111 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is arranged at the driving end thereof. The end cover 112 is arranged outside the transmission mechanism. The other end of the box body 111 is a non-driving end ND, and an electrode 132 is arranged at this end. The electrode 132 is connected to the central axis 131 of the developing roller and abuts against the movable terminal 151 arranged on the drum frame. A separation assembly 16 for receiving the force of the electronic photographic imaging device to separate the developing roller 13 from the photosensitive drum 14 is also arranged at the non-driving end ND of the box body 111, and is arranged downstream of the electrode 132 along the installation direction of the developing box 11 to the drum frame 12.

[0097] The separation assembly 16 is a connecting rod mechanism, including a first rod 161 and a second rod 162 connected to each other. The first rod 161 is rotatably fixed to the box body 111 through a fixing column 1111 provided on the box body 111 and its through hole 1612, and the second rod 162 is rotatably fixed through a fixing column 1113 and a through hole 1622, wherein the top ends of the fixing columns 1111 and 1113 are respectively provided with hooks 1112 and 1114 to facilitate the installation and fixation of the first rod 161 and the second rod 162. A force receiving portion 1611 is provided at one end of the first rod 161 for receiving the force applied by the force applying member 1 of the electronic photographic imaging device, and a connecting column 1613 is provided at the other end to connect with the connecting end 1621 of the second rod 162, and a blind hole is provided at the end of the second rod 162 for the connecting column 1613 to penetrate. The other end of the second rod 162 is an abutting portion 1623 for abutting against an abutting portion 1214 provided on the shell 121 of the drum frame 12 .

[0098] When the developing box 11 is installed to the drum frame 12, it is installed to the drum frame 12 in a manner that the developing roller is located at the front side along the installation direction, and the central axis 131 of the developing roller protruding out of the box body 111 is guided by the receiving grooves 1211 and 1212 to move forward and finally be received in the receiving grooves 1211 and 1212. The electrode 132 abuts against the movable terminal 151, the developing roller contacts the photosensitive drum 14, the electrode 132 receives power from the movable terminal 151 and transmits it to the central axis 131 of the developing roller, and the processing box 100 can start working. When the processing box 100 installed in the electrophotographic imaging device is not working, such as Figure 2-5 The electronic photographic imaging device applies pressure F to the separation assembly 16 through the force-applying member 1, and the force receiving portion 1611 is pushed to rotate the first rod 161 around the fixed column 1111 along the R1 direction, thereby driving the second rod 162 to rotate around the fixed column 1113 along the direction R2 opposite to the rotation direction of the first rod 161. The abutment portion 1623 abuts against the abutment portion 1214 of the shell 121, and the rotation of the second rod 162 is restricted, so that the abutment portion 1623 receives the reaction force generated by the abutment portion 1214 of the shell 121, pushing the separation assembly 16 and the developing box 11 to move so that the second rod 162 can further rotate around the fixed column 1111, thereby separating the developing roller 13 from the photosensitive drum 14, and the movable terminal 151 is pushed by the electrode 132 to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity 1213. When the force-applying member 1 does not apply pressure to the separation assembly 16, the first rod 161 and the second rod 162 rotate in the opposite direction to the separation action, and at the same time, the developing box 11 returns to its original position under the action of gravity, the developing roller 13 contacts the photosensitive drum 14, and the movable terminal 151 maintains contact with the electrode 132 under the action of elastic force and returns to the initial position, and the processing box 100 can start working.

[0099] In this embodiment, the separation assembly 16 has a simple structure, the connection method of each component is simple and reliable, and the precision requirement is low, so the manufacturing cost of the developer box is low.

[0100] Example 2-2

[0101] Except for the difference in the structure of the separation assembly, the structure of the process cartridge in this embodiment may be similar or identical to that in Embodiment 2-1. Figure 2-6 As shown, the processing box 200 includes a developer box 21 and a drum frame 22 which are installed together in a longitudinally consistent manner. The developing roller 23 and the photosensitive drum 24 are parallel to each other and face each other. After the developer contained in the developer box 21 is used up, the developer box 21 can be removed from the drum frame 22 and replaced with a new developer box 21. The drum frame 22 does not need to be removed from the electronic photographic imaging device. When the service life of the photosensitive drum 24 or other components installed in the drum frame 22 is reached, the drum frame 22 can also be removed from the electronic photographic imaging device to replace a new drum frame 22. The structure of each component of the processing box 200 is described below. The structure of the drum frame 22 is basically the same as the drum frame structure in the processing box embodiment 2-1, and will not be repeated here.

[0102] like Figure 2-7 to Figure 2-8 As shown, the developing box 21 includes a developing roller and a box body 211. Along the installation direction when installed to the drum frame 22, the developing roller is arranged at the front side, and the central axis 231 of the developing roller protrudes to the end beyond the box body 211. The box body 211 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is arranged at the driving end thereof, and the end cover 212 is arranged outside the transmission mechanism. The other end of the box body 211 is a non-driving end ND, and an electrode 232 is arranged at this end. The electrode 232 is connected to the central axis 231 of the developing roller and abuts against the movable terminal arranged on the drum frame. The separation assembly 26 for receiving the force of the electronic photographic imaging device to separate the developing roller 23 from the photosensitive drum 24 is also arranged at the non-driving end of the box body 211, and is arranged downstream of the electrode 232 along the installation direction of the developing box 21 to the drum frame 22.

[0103] The separation assembly 26 includes a first component 261 and a second component 262, wherein the first component 261 is rotatably fixed to the box body 211 through a fixing column 2111 and its through hole 2613, and the second component 262 is arranged in a manner of being reciprocating along a limited direction through a fixing seat 2113. A hook 2112 is arranged at the top of the fixing column 2111 to facilitate the installation and fixing of the first component 261. The first component 261 includes a force receiving portion 2611 and a gear 2612, and the second component 262 is arranged in the square through hole 2114 of the fixed seat 2113, and includes a rack portion 2621, a protrusion 2622 and an abutment portion 2623. The rack portion 2621 is meshed with the gear 2612, and the protrusion 2622 protrudes from the slide groove 2115 of the fixed seat 2113. The rack portion 2621 and the abutment portion 2623 are respectively exposed from both ends of the square through hole 2114, so that the second component 262 is limited by the square through hole 2114 and the slide groove 2115 to be able to reciprocate within a certain range along the extension direction of the square through hole 2114.

[0104] When the developing box 21 is installed to the drum frame 22, the developing roller 23 is installed to the drum frame 22 in the installation direction so that the developing roller 23 is located at the front side. The central axis 231 of the developing roller protruding out of the box body 211 is guided forward by the receiving groove and finally received in the receiving groove. The electrode 232 abuts against the movable terminal, the developing roller contacts the photosensitive drum, the electrode 232 receives power from the movable terminal and transmits it to the central axis 231 of the developing roller, and the processing box 200 can start working. When the processing box 200 installed in the electrophotographic imaging device is not working, such as Figure 2-9 As shown, the electronic photographic imaging device applies pressure F to the separation component 26 through the force-applying member 1, and the force receiving portion 2611 is pushed to rotate the first component 261 around the fixed column 2111. The gear 2612 rotates to drive the meshing rack portion 2621 to move. The abutment portion 2623 abuts against the abutment portion of the drum frame, and its movement relative to the square through hole 2114 is restricted, so that the abutment receiving portion 2623 receives the reaction force generated by the abutment portion of the drum frame, pushing the first component 261 and the developing box 21 to move in the opposite direction so that the second component 262 can move relative to the square through hole 2114, thereby separating the developing roller 23 from the photosensitive drum 24, and the movable terminal is pushed by the electrode 232 to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity. When the force-applying member 1 does not apply pressure to the separation assembly 16, the first component 261 rotates in the opposite direction, and the second component 262 moves in the opposite direction relative to the slide groove 2115. At the same time, the developing box 21 returns to its original position under the action of gravity, the developing roller 23 contacts the photosensitive drum 24, and the movable terminal maintains contact with the electrode 232 under the action of elastic force and returns to its initial position, and the processing box 200 can start working.

[0105] In this embodiment, the separation assembly 26 has a simple structure, the connection method of each component is simple and reliable, and the precision requirement is low, so the manufacturing cost of the developing box is low.

[0106] Example 2-3

[0107] Except for the difference in the structure of the separation assembly, the structure of the process cartridge in this embodiment may be similar or identical to that in Embodiments 2-1 and 2-2. Figure 2-10 As shown, the processing box 300 includes a developer box 31 and a drum frame 32 which are installed together in a longitudinally consistent manner. The developer roller 33 and the photosensitive drum 34 are parallel to each other and face each other. After the developer contained in the developer box is used up, the developer box 31 can be removed from the drum frame 32 and replaced with a new developer box 31. The drum frame 32 does not need to be removed from the electronic photographic imaging device. When the photosensitive drum 34 or other components installed in the drum frame 32 reach the end of their service life, the drum frame 32 can also be removed from the electronic photographic imaging device to replace a new drum frame 32. The structures of the various components of the processing box 300 are described below. The structure of the drum frame 32 is basically the same as the drum frame structure in Example 2-1, and will not be repeated here.

[0108] like Figure 2-11 to Figure 2-12 As shown, the developing box 31 includes a developing roller 33 and a box body 311. Along the installation direction when installing to the drum frame 32, the developing roller is arranged at the front side, and the central axis 331 of the developing roller protrudes to the end beyond the box body 311. The box body 311 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is arranged at the driving end thereof, and an end cover 312 is arranged outside the transmission mechanism. The other end of the box body 311 is a non-driving end ND, and an electrode 332 is arranged at this end. The electrode 332 is connected to the central axis 331 of the developing roller and abuts against the movable terminal arranged on the drum frame 32. A separation assembly 36 for receiving the force of the electronic photographic imaging device to separate the developing roller 33 from the photosensitive drum 34 is also arranged at the non-driving end of the box body 311, and is arranged downstream of the electrode 332 along the installation direction of the developing box 31 to the drum frame 32.

[0109] The separation assembly 36 includes a first component 361, a second component 362 and a third component 363, wherein the first component 361 is arranged through a fixed seat 3111, and the third component 363 is arranged through a fixed seat 3116 in a manner that they can reciprocate along a limited direction. The second component, i.e., the gear 362, is rotatably fixed on the box body 311 through a fixed column 3114 and its own through hole 3621, wherein a hook 3115 is provided at the top of the fixed column 3114 to facilitate the installation and fixation of the gear 362. The first component 361 is arranged in the square through hole 3112 of the fixed seat 3111, and includes a force receiving portion 3611, a rack portion 3612, a protrusion 3613 and a protruding end 3614. The rack portion 3611 is engaged with the gear 362, and the protrusion 3613 protrudes from the slide groove 3113 of the fixed seat 3111, so that the first component 361 is limited by the square through hole 3112 and the slide groove 3113 to be able to move back and forth within a certain range along the extension direction of the square through hole 3112. The third component 363 is arranged in the square through hole 3117 of the fixed seat 3116, and includes a rack portion 3631, a protrusion 3632 and an abutment portion 3633. The rack portion 3631 is meshed with the gear 362. The rack portion 3631 and the abutment portion 3633 extend from both ends of the square through hole 3117 respectively. The protrusion 3632 protrudes from the slide groove 3118 of the fixed seat 3116, so that the third component 363 is limited by the square through hole 3117 and the slide groove 3118 to be able to move back and forth within a certain range along the extension direction of the square through hole 3117.

[0110] When the developing box 31 is installed to the drum frame 32, the developing roller 33 is installed to the drum frame 32 in the installation direction so that the developing roller 33 is located at the front side. The central axis 331 of the developing roller protruding out of the box body 311 is guided forward by the receiving groove and finally received in the receiving groove. The electrode 332 abuts against the movable terminal, the developing roller 33 contacts the photosensitive drum 34, the electrode 332 receives power from the movable terminal and transmits it to the central axis 331 of the developing roller, and the processing box 300 can start working. When the processing box 300 installed in the electrophotographic imaging device is not working, such as Figure 2-13As shown, the electronic photographic imaging device applies pressure F to the separation component 36 through the force-applying member 1, and the force receiving portion 3611 is pushed to move the first component 361 along the square through hole 3112, thereby driving the gear 362 to rotate. The rotation of the gear 362 drives the third component 363 to move along the square through hole 3117. The abutment portion 3633 is abutted with the abutment portion of the drum frame, and its movement relative to the square through hole 3117 is restricted, so that the abutment portion 3633 receives the reaction force generated by the drum frame 32, and pushes the first component 361, the gear 362 and the developing box 31 to move in the opposite direction, so that the third component 363 can move relative to the square through hole 3117, thereby separating the developing roller 33 from the photosensitive drum 34, and the movable terminal is pushed by the electrode 332 to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity. When the force-applying member 1 does not apply pressure to the separation assembly 36, the first component 361 and the third component 363 move in opposite directions relative to the slide grooves 3113 and 3118 respectively, and the gear 362 rotates in the opposite direction. At the same time, the developing box 31 returns to its original position under the action of gravity, the developing roller 33 contacts the photosensitive drum 34, and the movable terminal maintains contact with the electrode 332 under the action of elastic force and returns to its initial position, and the processing box 300 can start working.

[0111] In this embodiment, the separation assembly 36 has a simple structure, the gears are separately provided, the precision is easier to ensure, the connection method of each component is simple and reliable, and the precision requirement is low, so that the manufacturing cost of the developing box is low.

[0112] Embodiment 2-4

[0113] Except for the difference in the structure of the separation assembly, the structure of the process cartridge in this embodiment may be similar or identical to the structures in Embodiments 2-1, 2-2, and 2-3. Figure 2-14 As shown, the processing box 400 includes a developer box 41 and a drum frame 42 which are installed together in a longitudinally consistent manner. The developer roller 43 and the photosensitive drum 44 are parallel to each other and face each other. After the developer contained in the developer box 41 is used up, the developer box 41 can be removed from the drum frame 42 and replaced with a new one. The drum frame 42 does not need to be removed from the electronic photographic imaging device. When the photosensitive drum 44 or other components installed in the drum frame 42 reach the end of their service life, the drum frame 42 can also be removed from the electronic photographic imaging device to replace a new one. The structures of the various components of the processing box 400 are described below. The structure of the drum frame 42 is basically the same as the drum frame structure in the processing box embodiment 2-1, and will not be repeated here.

[0114] like Figure 2-15 to Figure 2-16As shown, the developing box 41 includes a developing roller 43 and a box body 411. Along the installation direction when installed to the drum frame 42, the developing roller 43 is arranged at the front side, and the central axis 431 of the developing roller protrudes to the end beyond the box body 411. The box body 411 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is arranged at the driving end thereof. The end cover 412 is arranged outside the transmission mechanism. The other end of the box body 411 is a non-driving end ND, and an electrode 432 is arranged at this end. The electrode 432 is connected to the central axis 431 of the developing roller and abuts against the movable terminal arranged on the drum frame 42. A separation component 46 for receiving the force of the electronic photographic imaging device to separate the developing roller 43 from the photosensitive drum 44 is also arranged at the non-driving end ND of the box body 411, and is arranged downstream of the electrode 432 along the installation direction of the developing box 41 to the drum frame 42.

[0115] The separation assembly 46 includes a first member 461 and a second member 462, wherein the first member 461 is arranged through a fixed seat 4111, and the second member 462 is arranged through a fixed seat 4114 in a manner that the first member 461 can reciprocate along a limited direction. The first member 461 is partially accommodated in a square through hole 4112 of the fixed seat 4111, and includes a force receiving portion 4611, a sliding portion 4612, and a first abutting inclined surface 4613. The fixed seat 4111 is also provided with a hook 4113 to limit the position of the first member 461, so that the first member 461 is limited by the square through hole 4112 and the hook 4113 to be able to reciprocate within a certain range along the extension direction of the square through hole 4112. The second component 462 is arranged in the opening of the fixed seat 4114, and includes a second abutment slope 4621, a protrusion 4622 and an abutment portion 4633. The second abutment slope 4621 abuts against the first abutment slope 4613 of the first component 461, and the protrusion 4622 protrudes from the slide groove 4115 of the fixed seat 4114, so that the second component 462 is limited to be able to move back and forth within a certain range along the extension direction of the slide groove 4115.

[0116] When the developing box 41 is installed to the drum frame 42, the developing roller 43 is installed to the drum frame 42 in the installation direction so that the developing roller 43 is located at the front side. The central axis 431 of the developing roller protruding out of the box body 411 is guided forward by the receiving groove and finally received in the receiving groove. The electrode 432 abuts against the movable terminal, the developing roller contacts the photosensitive drum, the electrode 432 receives power from the movable terminal and transmits it to the central axis 431 of the developing roller, and the processing box 400 can start working. When the processing box 400 installed in the electrophotographic imaging device is not working, such as Figure 2-17As shown, the electronic photographic imaging device applies pressure F to the separation component 46 through the force-applying member, and the force receiving portion 4611 is pushed to move the first component 461 along the square through hole 4112, and the first abutting slope 4613 pushes the second component 462 to slide along the slide groove 4115. The abutting portion 4623 abuts against the abutting portion of the drum frame, and its movement along the extension direction of the slide groove 4115 is restricted, so that the abutting portion 4623 receives the reaction force generated by the drum frame 42, and pushes the separation component 46 and the developing box 41 to move so that the second component 462 can move relative to the slide groove, thereby separating the developing roller 43 from the photosensitive drum 44, and the movable terminal is pushed by the electrode 432 to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity. When the force-applying member does not apply pressure to the separation assembly 46, the first component 461 and the second component 462 move in opposite directions, and at the same time, the developing box 41 returns to its original position under the action of gravity, the developing roller 43 contacts the photosensitive drum 44, and the movable terminal maintains contact with the electrode 432 under the action of elastic force and returns to its initial position, and the processing box 400 can start working.

[0117] In this embodiment, the separation assembly 46 has a simple structure, a simple and reliable connection method, and low precision requirements, so that the manufacturing cost of the developing box is low.

[0118] Embodiment 2-5

[0119] The structure of the process cartridge in this embodiment may be similar or identical to that in Embodiments 2-1 to 2-4, except that the structure of the separation assembly is different. Figure 2-18 As shown, the processing box 500 includes a developer box 51 and a drum frame 52 which are installed together in a longitudinally consistent manner. The developer roller 53 and the photosensitive drum 54 are parallel to each other and face each other. After the developer contained in the developer box 51 is used up, the developer box 51 can be removed from the drum frame 52 and replaced with a new one. The drum frame 52 does not need to be removed from the electronic photographic imaging device. When the photosensitive drum 54 or other components installed in the drum frame 52 reach the end of their service life, the drum frame 52 can also be removed from the electronic photographic imaging device to be replaced with a new one. The structures of the various components of the processing box 500 are described below. The structure of the drum frame 52 is basically the same as the drum frame structure in Example 2-1, and will not be repeated here.

[0120] like Figure 2-19 to Figure 2-20As shown, the developing box 51 includes a developing roller 53 and a box body 511. Along the installation direction when installed to the drum frame 52, the developing roller 53 is arranged at the front side, and the central axis 531 of the developing roller protrudes to the end beyond the box body 511. The box body 511 has a developer accommodating portion for accommodating the developer, and a transmission mechanism is arranged at the driving end thereof. The end cover 512 is arranged outside the transmission mechanism. The other end of the box body 511 is a non-driving end ND, and an electrode 532 is arranged at this end. The electrode 532 is connected to the central axis 531 of the developing roller and abuts against the movable terminal arranged on the drum frame. A separation component 56 for receiving the force of the electronic photographic imaging device to separate the developing roller 53 from the photosensitive drum 54 is also arranged at the non-driving end of the box body 511, and is arranged downstream of the electrode 532 along the installation direction of the developing box 51 to the drum frame 52.

[0121] The separation assembly 56 includes a first component 561 and a second component 562, wherein the first component 561 is rotatably fixed to the box body 511 through a fixing column 5111 and its through hole 5612, and the second component 562 is arranged in a manner that it can reciprocate along a limited direction through a fixing seat 5113. A hook 5112 is arranged at the top of the fixing column 5111 to facilitate the installation and fixing of the first component 561. The first component 561 includes a force receiving portion 5611, a through hole 5612 and an abutting rod 5613. The second component 562 is arranged in the opening 5115 of the fixed seat 5113, and includes an abutment slope 5621, a protrusion 5622 and an abutment portion 5633. The abutment slope 5621 abuts against the abutment rod 5613 of the first component 561 in a linear contact manner, and the protrusion 5622 protrudes from the slide groove 5114 of the fixed seat 5113, so that the second component 562 is limited to be able to move back and forth within a certain range along the extension direction of the slide groove 5114.

[0122] When the developing box 51 is installed to the drum frame 52, it is installed to the drum frame 52 in the installation direction in such a way that the developing roller 53 is located at the front side. The central axis 531 of the developing roller protruding out of the box body 511 is guided forward by the receiving groove and finally received in the receiving groove. The electrode 532 abuts against the movable terminal, the developing roller 53 contacts the photosensitive drum 54, the electrode 532 receives power from the movable terminal and transmits it to the central axis 531 of the developing roller, and the processing box 500 can start working. When the processing box 500 installed in the electronic photographic imaging device is not working, such as Figure 2-21As shown, the electronic photographic imaging device applies pressure F to the separation component 56 through the force-applying member, the force receiving portion 5611 is pushed to rotate the first component 561, and the abutment rod 5613 pushes the second component 562 to slide along the slide groove 5114. The abutment portion 5623 abuts against the abutment portion of the drum frame, and its movement along the extension direction of the slide groove 5114 is restricted, so that the abutment portion 5623 receives the reaction force generated by the drum frame 52, pushes the separation component 56 and the developing box 51 to move so that the second component 562 can move relative to the slide groove 5114, and then separates the developing roller 53 from the photosensitive drum 54, and the movable terminal is pushed by the electrode 532 to overcome the elastic force of the elastic mechanism and move into the terminal accommodating cavity. When the force-applying member does not apply pressure to the separation assembly 56, the first component 561 rotates in the opposite direction and the second component 562 moves in the opposite direction. At the same time, the developing box 51 returns to its original position under the action of gravity, the developing roller 53 contacts the photosensitive drum 54, and the movable terminal maintains contact with the electrode 532 under the action of elastic force and returns to its initial position, and the processing box 500 can start working.

[0123] In this embodiment, the separation assembly 56 has a simple structure, a simple and reliable connection method, and low precision requirements, so that the manufacturing cost of the developer box is low.

[0124] The above is a detailed description of the utility model in combination with specific embodiments, and it cannot be determined that the specific implementation methods of the utility model are limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, making several equivalent substitutions or obvious modifications without departing from the concept of the utility model should be regarded as falling within the scope of patent protection determined by the claims submitted for the utility model.

Claims

1. A developing box, for an electronic photographic imaging device, mounted on a drum frame having a photosensitive drum, the developing box comprising a box body and a developing roller, the box body being provided with a developer accommodating chamber for accommodating a developer, a separating member and an electrode being provided at one longitudinal end of the box body, the separating member comprising an abutting portion and a force receiving portion, wherein the abutting portion abuts against the drum frame, the force receiving portion being used to receive a force applied by the electronic photographic imaging device, the electrode being connected to a central axis of the developing roller and abutting against a terminal of the drum frame to receive power from the terminal to charge the developing roller, characterized in that: The separation member also includes a connecting portion that is relatively rotatably connected to the box body or the developing roller. When the force receiving portion receives the force applied by the electronic photographic imaging device, the separation member rotates around the abutting portion to separate the developing roller from the photosensitive drum.

2. The developing cartridge according to claim 1, characterized in that: The box body is provided with a first matching portion, and the separation member is provided with a second matching portion. When the separation member rotates relative to the box body, the second matching portion moves relative to the first matching portion.

3. The developing cartridge according to claim 2, characterized in that: The first matching portion is configured as one of a slot or a protrusion, and the second matching portion is configured as the other of the protrusion or the slot. The protrusion is accommodated in the slot, and the protrusion is provided with a buckle.

4. The developer cartridge according to any one of claims 1 to 3, characterized in that: The connecting portion is connected to one end of the electrode, and the other end of the electrode is connected to the developing roller. When the separating member rotates, the electrode is driven to move and the developing roller is driven to move.

5. The developing cartridge according to claim 4, characterized in that: The connecting portion has a protrusion connected to the connecting hole of the electrode.

6. The developer cartridge according to any one of claims 1 to 3, characterized in that: The connecting portion has a first through hole directly connected to the central axis of the developing roller. The electrode has a second through hole connected to the central axis of the developing roller. The first through hole and the second through hole at least partially overlap.

7. The developing cartridge according to any one of claims 1 to 3, characterized in that: The electrode is integrally formed with the separation member, the electrode is a part of the separation member, and a portion where the electrode is connected to a central axis of the developing roller forms the connection portion.

8. The developing cartridge according to claim 7, characterized in that: The separation member is made of a conductive material to function as the electrode for charging the developing roller, and has an electrical connection portion that abuts against the terminal.

9. The developer cartridge according to any one of claims 1 to 3, characterized in that: The developing box is provided with a locking piece, and the drum frame is provided with an unlocking piece. When the developing box is installed in the drum frame, the locking piece cooperates with the unlocking piece to prevent the developing box from being removed in a direction opposite to the installation direction.

10. A process cartridge for an electronic photographic imaging device, the process cartridge comprising a developing cartridge and a drum frame, the developing cartridge comprising a cartridge body and a developing roller, the drum frame comprising a photosensitive drum, characterized in that: The developing box is the developing box according to any one of claims 1 to 9.

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